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T.E.Atkins

Apr 18, 2011 5:08 AM

trailblazer engine popping

Has anyone experienced a loud pop in the engine compartment when first stating their engine when it is cold? This seems to be worse if the gas tank has recently been filled. Can sometimes be subdued pop but can also be a very loud bang. Been to dealer twice with no results. If a trouble code is not displayed they are clueless.

Chevrolet Customer Service

Apr 18, 2011 11:18 AM

What model year vehicle do you have? I would like to see if I can assist you. Thank you.

Jeff Morris, Chevrolet Customer Service

T.E.Atkins

Apr 20, 2011 7:52 AM

This is a 2006 trailblazer LT 4fd with the 4.2 liter L-6 engine.

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